Online Education

For Gem Enthusiasts

Become a Member

"IGS is a Godsend for me!"

- Charlie Bernheiser, IGS Member

"Thank you for the fantastic adventure!"

- John Parrot, IGS Member
separator

Ways to Start Your Gemology Education

Join Our Thriving Community


1,543 Articles
11,341 Members
194 Directory Listings
separator

The world's best gem articles, published weekly.


Most Recent Articles

Gemstone Coatings: CVD and More

Gemstone coatings are a simple way to enhance color and luster. Learn about commonly coated gems, different coating techniques, and how to detect…

How Does Topaz Form?

Topaz requires specific and unusual conditions to form. Learn how topaz develops and how it gets its colors, from yellow and blue to rare and valuable…

separator